<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    
</head>
<script src="js/vue.js"></script>
<body>
    <div id="app">
      <p v-text="msg">123</p>
      <p>{{msg}}123</p>
    </div>
   
</body>
<script>
         
         var vm=new Vue({
        el:"#app",
        data:{
            msg:'HELLO CHINA'
        }
    })
   
</script>
</html>